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rustobust
 Post subject: 492 heads
PostPosted: Sat May 24, 2003 1:43 pm 
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Joined: Sat Nov 23, 2002 11:26 pm
Posts: 144
Location: San Diego Ca
492 small block chevy heads what did they come on and what are they worth.
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rick james
 Post subject:
PostPosted: Tue May 27, 2003 10:40 am 
I believe those are off the counter heads. They should be big valve, small cc combustion chamber angle plug heads.
I do not think they came on any production vehicle, possibly
a corvette, if any.

They used to be worth a lot, but now you can get better heads than that from the aftermarket. If they are in good shape they are worth at least $ 500.00 complete.
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rick james
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PostPosted: Tue May 27, 2003 10:43 am 
http://www.mortec.com/castnum.htm

Here is a casting ref. guide link.
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chris maxwell
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PostPosted: Wed May 28, 2003 8:05 am 
My book shows head # 3991492 came out on 68-73 327and 350 came with 1.94/1.50 & 2.02/1.6 valves
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